DC deep well pumps

[Wy_White_Wolf]

Aloha ~ my intention is to fill a cistern similar to Wy_White_Wolf...and drip my anticipated orchard and water troughs. Also...simply want to be able to fill my drinking water bottle! I noticed the comment on better to push vs pull...interesting, I was under the impression such depth as 265' required a submersible. Perhaps someday when I drop more bones to upgrade my whole house solar system would I be able to get a pressure tank and convert house. Smart dudes rock

The "Simple Pump" that Solarix mentions is similar to the old windmill pumps. The pump is down hole and operated by a rod that is powered above ground level. The Simple Pump uses a hand pump or electric motor to move the rod instead of a wind mill.

Too complicated and too many things to go wrong for my liking. It's easier for me to pull my pump when a rebuild is needed than it would be to pull the "simple pump" and disconnect/connect all of that rod and down pipe when it's pump needs replaced/rebuilt. Plus my setup was about 1/2 of what a simple pump setup would have cost.

265' is too deep for the Shurflo 9300. 230' max so if your static level is higher you might be able to use it. Mine is set at 160' with a static water level of 66'.

WWW

[peakbagger]

FYI, if you go with a standard AC pump with a variable speed drive (Franklin Electric monodrive) there is no start up surge. The trade off is the price of the drive and complexity.

[wildheart]

Aloha ~ my intention is to fill a cistern similar to Wy_White_Wolf...and drip my anticipated orchard and water troughs. Also...simply want to be able to fill my drinking water bottle! I noticed the comment on better to push vs pull...interesting, I was under the impression such depth as 265' required a submersible. Perhaps someday when I drop more bones to upgrade my whole house solar system would I be able to get a pressure tank and convert house. Smart dudes rock

[solarix]

i like the "Simple Pump" brand of solar pumps because the motor is not submersed. have used several dc submersible pumps in the past and found they don't last long because the nature of solar pumps is they need to run slow which means close clearances and seals that wear. when the seals wear out, the motor gets wet.... Use an AC pump whenever possible. another point with pumping is to always avoid sucking water - much better to push it.

[Wy_White_Wolf]

I used a Shurflo 9300 series pump wired solar direct with a LCB. It's fills a cistern that is then gravity fed to water my orchard. The Shurflo pump is not the best out there but I felt it was a good trade off on price. The pump is rebuildable and has been running for 5 years now without a problem.

It is not a good choice if you wish to run a pressure tank.

WWW

[Mike90250]

Thank you Mike ~
Water was hit at 260' and drilling ceased at 280'. They hung monster 220v pump at 265'. Drill service agreed to replace with appropriate size solar pump...and I have been doing a lil homework. I spoke w GrundFos and they suggested 3 possible pump options that I can't tell the difference between...the 3SQF-2, 6SQF-3 and 3SQF-3. Objective is to solar power with Honda EU 3000 as alternate option. If you could discern and suggest the best fit...it would be MUCH appreciated. Mahalo

Are you pumping into a pressure tank ? What pressure ? How much flow ? You answer the questions and you can discover which pump to use. I don't know what your need is

[wildheart]

Thank you Mike ~
Water was hit at 260' and drilling ceased at 280'. They hung monster 220v pump at 265'. Drill service agreed to replace with appropriate size solar pump...and I have been doing a lil homework. I spoke w GrundFos and they suggested 3 possible pump options that I can't tell the difference between...the 3SQF-2, 6SQF-3 and 3SQF-3. Objective is to solar power with Honda EU 3000 as alternate option. If you could discern and suggest the best fit...it would be MUCH appreciated.

Mahalo

[fivewin]

What do mean "start without a load"? Is it not so that when the ac pump starts the starting current is (much)more.

Or is it a dc (brushless) pump with an adaptor?

[Raul]

That's very interesting. I have a karcher bp4 pumping from 55-60 feet. The one way valve is fitted 5 feet above the pump so the line remains under pressure but alows the pump to start and free spin before the pressure hits the valve again. It came with a one way valve built in and took it out as the pump will lock up. By moving it up the line 5-6 feet alows the pump to start without a load.
This pump is 750w and is fed by a victron 1200va-1000w inverter that services my garage, where I have a freezer as well. Never had a overload alarm ever.

[Mike90250]

Some pumps only take 5x running power to start. Research the pump, download a copy of the manual, and DESIGN a system. Or just throw parts at it, and maybe it will work.
Hey, the bridge didn't fall down, so let the school bus over it.

[fivewin]

That guy lost his manual. So i only see the sticker.

But wow, to be on the save side you must have at least 4000 pure sinewave inverter. Lets see if my friend is willing to check his bank ac hehehe

He wants to go offgrid

[Mike90250]

If an AC pump draws 375watt according to the sticker on the pump, can i run (startup) this pump with a 1200watt inverter.

assume starting current is 10x running current. 3,750 watts for 2 seconds to start. Can a 1,200w inverter provide a surge of 3750 watts for a second or so ?
Doubtful, even if it's a 24V inverter. You can call the pump mfg and see what they spec the starting amps at, or what the Locked Rotor Amps are.
here's a chart, see if you can work it backwards to see what your starting watts would be

Well Pump Motor Specs.jpg

[fivewin]

If an AC pump draws 375watt according to the sticker on the pump, can i run (startup) this pump with a 1200watt inverter.

[Mike90250]

Some questions first. The well is 265' What is the water level you will be pumping from ? How many GPM do you need ? There are some 1/3 hp AC pumps that may have enough head for 1GPM
It takes energy to lift water, so if you can use solar to pump to a ground level cistern with a Grundfos SQ flex http://us.grundfos.com/products/find...ct/sqflex.html
But they are not cheap.

[wildheart]

Aloha


just new to this forum...due to last week's debacle.

I saved and executed the drilling of a well on my land. Apparently all the well diggers jobs are large, municipal and on grid...thus the 220v that now hangs 265' down. I am off grid with a system that is just fitted to my home, barely. I am searching for the best dc pump/panel combo to replace the unusable pump & stand alone. Does anybody run such a system that could also be supplemented with 110v Honda EU 3000 gennie?

Water, water everywhere. ..but not a drop to drink

Thank you...I hope this is a simple solve!